The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 2001
Filed:
May. 11, 2000
Bruce Michael Furman, Palo Alto, CA (US);
Maxim Integrated Products, Inc., Sunnyvale, CA (US);
Abstract
Curvature in the temperature response of junction voltage of a diode or transistor is compensated by circuitry which offsets the curvature at temperatures below a reference temperature and at temperatures above a reference temperature. Two current sources are provided including a first current source of current proportional to absolute temperature (PTAT) less a current complimentary to absolute temperature (CTAT) and a second current source of PTAT plus beta times CTAT (PTAT+&bgr;CTAT). A first current path is connected between a first current path between two potential levels (V,G,) including the first current source serially connected with first and second semiconductor junctions, a second current path between the two potential levels including the second current source serially connected with a first three terminal transistor including a control terminal, means coupling the voltage across the first and second semiconductor junction devices to the control terminal of the first transistor, a second three terminal transistor including a control terminal, and means coupling a voltage from the first transistor to the control terminal of the second transistor to control current through the second transistor.